Ever wonder what the cops are looking for when they stop a person for suspected drunk driving?  There are 24 cues that NHTSA teaches the police to look for; one that is missing is significant:

The Visual Detection of DWI Motorists NHTSA

24 Driving Cues   DWI DETECTION GUIDE

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Problems Maintaining Proper Lane Position:

Weaving

Weaving across lane lines

Straddling a lane line

Swerving

Turning with a wide radius

Drifting

Almost striking a vehicle or other object

Speed and Braking Problems:

Stopping problems (too far, too short, or too jerky)

Accelerating or decelerating for no apparent reason

Varying speed

Slow speed (10+ mph under limit)

Vigilance Problems:

Driving in opposing lanes or wrong way on one-way

Slow response to traffic signals

Slow or failure to respond to officer's signals

Stopping in lane for no apparent reason

Driving without headlights at night

Failure to signal or signal inconsistent with action

Judgment Problems:

Following too closely

Improper or unsafe lane change

Illegal or improper turn (too fast, jerky, sharp, etc.)

Driving on other than the designated roadway

Stopping inappropriately in response to officer

Inappropriate or unusual behavior (throwing, arguing, etc.)

Appearing to be impaired

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One driving action that is not an established cue of a drunk driver is speeding!  Yet many of the people ultimately arrested for drunk driving are stopped for speeding, but speeding is inconsistent with drunk driving!